67090320 has 240 divisors, whose sum is σ = 252787392. Its totient is φ = 15805440.

The previous prime is 67090307. The next prime is 67090321. The reversal of 67090320 is 2309076.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×67090320² = 9002222075404800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67090321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 340462 + ... + 340658.

Almost surely, 2^67090320 is an apocalyptic number.

67090320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67090320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126393696).

67090320 is an abundant number, since it is smaller than the sum of its proper divisors (185697072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67090320 is a wasteful number, since it uses less digits than its factorization.

67090320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 67090320 is about 8190.8680858625. The cubic root of 67090320 is about 406.3372350732.

Adding to 67090320 its reverse (2309076), we get a palindrome (69399396).

The spelling of 67090320 in words is "sixty-seven million, ninety thousand, three hundred twenty".